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GAIN EXPRESS HOLDINGS LIMITED
HK
12
YRS
Main categories: industrial Endoscope,PH meter,Refractometer,Fish Finder,Lux Meter
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Product categories
NEW ARRIVALS
Air Quality Meters
Automotive Testing Equipment
Water Quality Meters
Fishing Tackles/Gears
Dental Loupe
Gemological Instruments / Jeweler Tools
Health, Fitness & Sports
Inspection Cameras / Endoscopes / Borescopes
Microscopes / Ring Lights / Illuminators
Multimeters / Clamp Meters
Measuring Instruments
OEM Products
Ozone Generator
Refractometers
Tension Tester
Water Level Alarm
Weather Station
Ungrouped
300cm long Cable ORP Electrode for ORP Meter Tester Controller (OEM packaging available)
$17.16 - $19.37
(Min. Order) 1 set
20x Magnification 20.5mm Jeweler Gem Loupe Triplet Lens Jewelry Optical Hobbyist Stamp & Coin (OEM Packaging Available)
$6.14 - $7.39
(Min. Order) 2 sets
3-in-1 Automotive Antifreeze Refractometer 1.100 - 1.400kg/l System Coolant Freezing Point (OEM Packaging Available)
$9.05 - $10.88
(Min. Order) 1 set
Gloss Surface Meter 0.1-200 GU Tester Meter 20deg 45deg 75deg for Ceramics Films Textiles Rechargeable Reflectometer Triple
$216.87 - $227.85
(Min. Order) 1 piece
3-in-1 Digital EC / CF / TDS Meter Combo Water Quality Tester IP65 Waterproof Conductivity with ATC (OEM packaging available)
$20.65 - $23.30
(Min. Order) 1 set
Greenhouse CO2 Controller w/ 4.5 Meters Remote CO2 Sensor Auto Detect Day Night Function Perfect for Grow Rooms, Home, Offices
$93.90 - $108.90
(Min. Order) 1 set
23 orders
Digital CO2 IAQ Monitor Controller 45M Cable NDIR Sensing Probe w/ Relay Function Green House Home, Office, Factory
$93.90 - $108.90
(Min. Order) 1 piece
CO2 Carbon Dioxide Monitor & Controller (Relay Function) w/ Remote Sensor for Home, Office, Hospital (OEM Packaging Available)
$93.90 - $108.90
(Min. Order) 1 piece
5 orders
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Professional Multi-parameter ORP Water Quality tester pH/ORP/Temp/Cond/TDS/Salt with ORP probe, Replaceable Probe
$97.56 - $108.11
Shipping: $31.80/set
Min. Order: 1 set
Add to cart
6-in-1 Pen type Water Quality Tester Multi-Parameter pH meter Temp. EC ORP TDS SAL Optional ORP Probe(OEM available)
$73.17 - $81.08
Shipping: $31.80/set
Min. Order: 1 set
5 sold
Add to cart
pH / EC / Temperature Meter ATC 3 in 1 Waterproof Combo Multi-Parameter Tester Pool Spa Drinking Purity
$15.80 - $17.83
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
Smart Mini WIFI 5-in-1 Water Quality Tester pH/TDS/SALT/S.G. & Temp Meter TUYA Smart App for Aquarium Hydroponics Pool Aqua
$25.22 - $28.46
Shipping: $11.34/piece
Min. Order: 5 pieces
Add to cart
Digital Pentype 3-in-1 Salinity & Temp Meter Tester NaCl Water Quality ATC Food Pool Cooking Seawater (OEM Packaging Available)
$22.81 - $25.74
Shipping: $28.00/set
Min. Order: 1 set
Add to cart
Digital Online pH & Temperature Continuous Monitor Meter for Pool Pond Spa Tank 2-point Calibration w/ pH Electrode & Temp Probe
$23.70 - $27.20
Shipping to be negotiated
Min. Order: 20 pieces
Digital pH Meter 2-point Calibration Online w/ pH Electrode & Temp Probe for Pool Pond Spa Tank (OEM Packaging Available)
$23.72 - $26.49
Shipping to be negotiated
Min. Order: 50 sets
NEW Pentype 7-in-1 PH Meter TDS/EC/ORP/Salinity/S.G./Temp. Tester For Drinking Water, Aquariums, Pool (OEM Packaging Available)
$15.02 - $16.95
Shipping: $6.36/piece
Min. Order: 5 pieces
Add to cart
3-007R TDS EC Temperature 3-in-1 Portable Digital Water Quality Meter with Aluminium Titanium Alloy Probe
$1.88 - $3.78
Shipping to be negotiated
Min. Order: 5 pieces
Waterproof pH Meter 0~14 Temperature Thermometer Aquarium Pool Water Quality Tester Replaceable Electrode
$15.50 - $17.80
Shipping to be negotiated
Min. Order: 20 pieces
Made in Taiwan/Digital 6-in-1 MultiFunction Pentype Water Quality Meter pH Temperature Conductivity TDS Salt Tester optional ORP
$73.17 - $81.08
Shipping: $31.80/piece
Min. Order: 1 piece
2 sold
Add to cart
5-in-1 Water Quality Multi-parameter Wall-mountable PH EC CF TDS (ppm) Temperature Test Meter Backlight Pond Drinking
$43.46 - $48.29
Shipping: $31.80/piece
Min. Order: 1 piece
Add to cart
Multi-parameter 5-in-1 Water Quality Meter Wall-mountable PH EC CF TDS (ppm) Temperature Tester (OEM Packaging Available)
$43.46 - $48.29
Shipping: $31.80/set
Min. Order: 1 set
Add to cart
pH TDS EC Temperature 4 in 1 Multifunctional Digital Portable Water Quality Meter with Backlight
$15.38 - $20.00
Shipping to be negotiated
Min. Order: 1 piece
5-in-1 Multi-Parameter Pentype Water Quality Tester (pH / TDS / EC / Temp / Salinity) Waterproof Digital Meter for Lab Household
$25.14 - $28.37
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
Digital 3-in-1 Portable pH TDS Temperature Water Quality Meter High Accuracy with Backlight
$13.74 - $21.90
Shipping to be negotiated
Min. Order: 1 piece
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